196619 has 4 divisors (see below), whose sum is σ = 198744. Its totient is φ = 194496.

The previous prime is 196613. The next prime is 196643. The reversal of 196619 is 916691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916691 = 17 ⋅53923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196619 is a prime.

It is a super-2 number, since 2×196619² = 77318062322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917 + ... + 1110.

It is an arithmetic number, because the mean of its divisors is an integer number (49686).

2¹⁹⁶⁶¹⁹ is an apocalyptic number.

196619 is a deficient number, since it is larger than the sum of its proper divisors (2125).

196619 is an equidigital number, since it uses as much as digits as its factorization.

196619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its digits is 2916, while the sum is 32.

The square root of 196619 is about 443.4174105738. The cubic root of 196619 is about 58.1489433865.

The spelling of 196619 in words is "one hundred ninety-six thousand, six hundred nineteen".